Dyeing apparatus.



Patented Mar. 9, 1915.

A. J. & J. A. RAU.

DYEING APPARATUS.

APPLICATION FILED MAR. 11, 1914.

THE NORRIS PETERS CO.. PHOTG-LITHQ, WASHINGTON. D. c.

' one direction and then in the Further objects of'the invention will ap-.

UNITED sTATEs PATENT oFFro ALBERT .r. RAU Ann JULIUS A. RAU, OF CLIFTON, NEW JERSEY.

ADYYEING APPARATUS.

Specification of Letters Patent. Y

Application filed March 11, 1914. Serial .No. 823,847.

To all whom it may concern Be it knownthat we, ALBERT J. RAU-and residing at Clifton, vented certain new and useful Improv ments in Dyeing Apparatus, of which the following is a clear, full, and exact description.

This invention relates to dyeing apparatus and particularly to such apparatus as are used for dyeing fabrics.

A principal object of the invention is to provide a simple apparatus which will in sure a. uniform dyeing effect throughout the entire length of the material dyed.

A further obje ct of the invention is to' effect the dyeing in such a way that the dye liquor of the bath comes directly in contact with the surface of the fabric, first on one side and then on the other, so that the dye liquor is forced through the fabric, first in other.

pear more fully hereinafter.v The drawing illustrates a bodiment of the invention. In the drawing. Figure 1 is a longitudinal vertical section; Fig. 2 is a transverse vertical section through the apparatus shown in Fig. 1; Fig. 3 is a detail of a portion of a drum constituting a feature of the apparatus; Fig. 4 is a detail showing a portion of the rim of the drum; Figs. 3 and 4 are upon an enlarged scale.

The apparatus preferably comprises avat 1 having end walls or heads 2 between which weprefer to mount two rotatable drums 3 and 4. These drums are preferably constructed on a plurality of spiders 5 having hubs 6 by means of which they are attached rigidly to the shafts 7., The ends of the drums are open and the length of the drums is such that each drum substantially bridges the distance between the heads 2; in this way the extremities of the drum substantially close off communication between the space around the drums and the interior of the drums adjacent the heads. The heads 2 are preferably provided with openings 8 of segmental form. and the vat is formed with false heads 9 which are inclosed so that conduits 10 are formed at each end of the vat communicating with the interior of the drums through the openings 8.. In the lower part of the heads 2, openings 11 are formed in which are mounted impellers12 suitable emattached to a common shaft 13 which is aratented Mar. 9, 1915. I

ranged to be rotated from the exterior bv I any suitable means such as belt pulley 14. I The outer surface of each drum is preferably built-up by attaching longitudinal bars or rods 15 on the rims of the'spiders in some such manner as indicated in F igs.'3 and 4. On these rods 15 we wrap helically about the drum a continuous fine wire 16 and then on thisfwire we lay an envelop or inner covering 17 0f coarse mesh wire gauze. Over this we place an outer cover 18 of fine mesh gauze wire. The shaftslare preferably provided with belt pulleys 19 and 20 respectively which are connected by a horizontalbelt 21 so that when pulley 20 is rotated bya driving belt 22, pulley 19 will also be rotated. Adjacent 'each pulley a clutch 23 is provided corresponding. to each drum. When one of the clutches 23 is thrownimits correspondingpulley will be rotated so as to rotate its corresponding drum. 1

By the use of the improved apparatus, the fabric to be dyed is wrapped in a coil 24: upon one of thedrums. This may be accomplished whileunwrapping it'from a roller 25 supported on bearings 26 on the vat. As illustrated, this coil is formed on the right handdrum in Fig. 2. The clutch and'the corresponding clutch of the left hand drum is closed. The end of the attached in any suitable manner such as b pinning it to the surface of the left' hand web is then i drum and the belt 22 is then driven so as to rotate the left hand drum of the arrow. This winds the web from the right hand drum to the left hand drum so that the layers of the web on the right hand drum pass over and form a coil of layers on the left hand drum. Vhile this is taking place. the shaft 13 is rotated so that the impellers 12 which are of opposite pitch draw the dye liquor from the ducts 10 into the space 27 under and surrounding the drum. This produces a circulation in the direction indicated by the arrows, andproduces an excess of hydrostatic pressure on the outer sides of the drums which forces the dye liquor through the layers of the fabric into the interior of the drums- After the web has completely passed from one drum to the other, it is passed back again in the same manner, the direction of rotation of the shaft 13 being the same as bein the direction cession,

fore so that the direction of the circulation fact that the web is wrapped in opposite directions on the two drums, it will be seen that the entire length of both sides of the cloth will be brought directly in contact with the bath and subjected to hydrostatic pressure, forcing the dye ric. In this way a very form dyeingefl'ect results.

During the dyeing process the drums and the web of fabric are completely immersed in the bath of dye liquor, the level of which is indicated at line 28. The hydrostatic pressure. forces the dye liquor through the entire mass of the web on each drum, passing through the layers in succession. course the layers of the fabric on one drum are arranged in reverse order with respect to the layers of fabric on the other drum. While we prefer an apparatus which acts by forcing the dye liquor through a plurality of layers of the fabric, it is evident that in practising the invention a single web of material could be guided aroundthe drums so that'the sides of the material would be exposed on the outside of the drums in sucin whichcase the dye liquor would be forced through a single layer of the material in one direction first,and then in the other direction.

It is understood that the embodiment, of

our invention described above is only one of the manyembodiments or forms the invention may take, and we do not wish to be limited in the practice of the invention nor in the claims to the particular embodiment described. V That we claim as new is i 1. In dyeing apparatus or the like, the combination of means for forming a plurality of layers of fabric in a position adjacent to each other, means for forming a plurality of layers of the same fabric in a reverse order, and means .7 for forcing a liquid through the said layers in succession.

eflicient and unithrough the fab- 2. In dyeing apparatus or thelike, the;

combination ofmeans for: forming a plurality of layers: of fabric in a position adjacent to each other, means for forrmnga plurality of layers of the same fabric in a reverse order, and means for forcing 1i quid through the said layers in succession, both of "said :means for forming a plurality of layers being movable so that the fabric may be passed from one ofsaid ineans yxt'o the other. 7

In dyeing apparatus or the like, the combination of means, for forming an open coil. of layers of fabric, means for forming a second coil of the same fabric of :layers, and for coiling the same ina reverse direction with respect to the direction produced by the first said ineans,and means for forcing a liquid throughithe said layers in S1101 cession.

.aln ,dyeingapparatus or the like, the:

combination of 'a bath for containing a liquid, twoseparate means for fcrmlngwa,

plurality of layers of the same fabric in a reverse order with respect to each means, and means for forcing a liquid through the sa d layers-in succession, both of said first means being adapted toirnmerse the ric in theliquid in said bath, and means for causing a circulation; of the liquid in the bath.

5. In dyeing apparatusorthe like,the a bath for containing, a

combination of 7 liquid, two rotatable drums immersed in said bath and adapted. towind a fabricon them in a reverse'directiion on each with the opposite surfaces of said fabric presented toward said drums in succession, and means for causing a circulation of the liquid.

Signed at New. York, N. Y'., this 4th of March,191i. V q

ALBERTLJJ RAII, Witnesses:

Gno. L. WrinnLooK, BEATRICE MrRvIs. I w Signed at Passaic, New; Jersey, this 15th day of March, 1914.

' JULIUS A. RAUL;

VVitnesses: v

W, J. ScnLnrcH, D. E. DA ELS;

Copies of this patent may be obtained for five cents each, by addressing the. Commissioner ,of l'atents.

Washington, D. G.

layers of =fab-- 

